Political and democratic rights are also protected under the Treaty of Waitangi, one of New Zealand's founding documents and a source of law under the unwritten constitution. Article 1 of the Treaty infers the right to govern in New Zealand being the basis for the Westminster system of government. The rights of Māori to govern their own affairs where necessary is inferred by Article 2, and the extent to which all New Zealanders are proportionately represented in the institutions of the State, and which New Zealanders participate in political processes such as voting is covered by Article 3. Framework for political rights protection Human rights and democracy are internationally recognised as interdependent and provide a framework for assessing the extent to which democratic rights are respected in law and practice. According to this framework, there are two key democratic principles. The principle of popular control is the right to a controlling influence over public decisions and decision-makers. The principle of political equality is the right to be treated with equal respect and as of equal worth in the context of such decisions. Recognition of the above principles requires a framework for guaranteed citizens' rights, a system of representative and accountable political institutions subject to popular authorisation, and active channeling of popular opinion and engagement with government by the people. Under this model, New Zealand recognises the political rights of its citizens in both law and practice. It does so by way of the Human Rights Commission, which provides a framework within the legal and political system; the ability to communicate and participate in the political system, and processes such as judicial review and complaints to the Office of the Ombudsman hold government and governmental departments accountable where necessary in order to maintain political rights. Economic, social and cultural rights See generally: Economic, social and cultural rights On 28 December 1978 New Zealand ratified the International Covenant on Economic, Social and Cultural Rights (ICESCR). Other international treaties which contain provisions concerning economic, social and cultural rights (ESCR) have also been ratified by New Zealand, such as the International Convention on the Elimination of All Forms of Racial Discrimination (CERD), the Convention on the Elimination of All Forms of Discrimination against Women (CEDAW), the Convention on the Rights of the Child (CRC) and the Convention on the Rights of Persons with Disabilities. ESCR are not specifically protected by New Zealand's human rights